Question

While in the dental chair the patient experiences an attach of wheezing, rapid breathing, and cyanosis. He should be treated with a/an

A. β2-adrenergic agonist.

B. muscarinic agonist.

C. β1-adrenergic antagonist.

D. nicotinic agonist.

Answer 1

This patient Presents with features of severe bronchoconstriction and respiratory failure , possibly an exacerbation of Asthma.

She/ he requires a bronchodilator at the earliest to reverse the bronchoconstriction.

From the above options ,

A) beta 2 adrenergic agonists are bronchodilators, which is the correct answer.

OTHER OPTIONS

C)beta one adrenergic antagonist are contraindicated due to their bronchoconstrictive effects.

B)Muscarinic agonists causes Bronchospasm and hence not indicated.

D)Nicotinic agonists are not useful in bronchoconstriction.